package ch02.impl;

import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.IOException;

public class Ex1Impl {
    public static void main(String[] args) throws ParserConfigurationException, IOException, SAXException {
        //得到DOM解析器的工厂实例
        DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance();
        //从DOM工厂获得DOM解析器
        DocumentBuilder db=dbf.newDocumentBuilder();
        //解析XML文档，得到一个Document对象，即DOM树
        Document doc = db.parse("test/ch02/exXml/ex1.xml");   //收藏信息.xml为保存手机收藏信息的xml
        //得到所有Brand节点列表信息
        NodeList brandList = doc.getElementsByTagName("Brand");
        //循环Brand信息
        for (int i = 0; i< brandList.getLength() ; i++){
            //获取第i个Brand元素信息
            Node brand = brandList.item(i);
            //获取第i个Brand元素的name属性的值
            Element element=(Element) brand;
            String attrValue = element.getAttribute("name");
            //获取第i个Brand元素的所有子元素的name属性值
            NodeList types=element.getChildNodes();
            for (int j =0; j<types.getLength(); j++){     //Type 节点
                Node node = types.item(j); //获取节点
                if (node.getNodeType() == Node.ELEMENT_NODE) { //判断节点类型
                    Element typeElement = (Element) node;    //Type节点
                    String type=typeElement.getAttribute("name");     //获取手机型号
                    System.out.println("手机："+attrValue+type);
                }
            }
        }

    }
}
